William Michael Warren, CRNA - Medicare Certified Registered Nurse Anesthetist (crna) in Hot Springs, AR

William Michael Warren, CRNA is a medicare enrolled "Nurse Anesthetist, Certified Registered" in Hot Springs, Arkansas. He graduated from nursing school in 2010 and has 14 years of diverse experience with area of expertise as Certified Registered Nurse Anesthetist (crna). He is a member of the group practice Ouachita Regional Anesthesia Pllc and his current practice location is 1910 Malvern Ave, Hot Springs, Arkansas. You can reach out to his office (for appointments etc.) via phone at (501) 321-1000.

William Michael Warren is licensed to practice in Arkansas (license number C02847) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1306141825.

Contact Information

William Michael Warren, CRNA
1910 Malvern Ave,
Hot Springs, AR 71901-7752
(501) 321-1000
(501) 620-2336

Map and Direction




Provider's Profile

Full NameWilliam Michael Warren
GenderMale
SpecialityCertified Registered Nurse Anesthetist (crna)
Experience14 Years
Location1910 Malvern Ave, Hot Springs, Arkansas
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • William Michael Warren graduated from nursing school in 2010
  NPI Data:
  • NPI Number: 1306141825
  • Provider Enumeration Date: 01/13/2011
  • Last Update Date: 02/25/2011
  Medicare PECOS Information:
  • PECOS PAC ID: 8729269113
  • Enrollment ID: I20110217000540

Medical Identifiers

Medical identifiers for William Michael Warren such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1306141825NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
163W00000XRegistered Nurse R64365 (Arkansas)Secondary
367500000XNurse Anesthetist, Certified Registered C02847 (Arkansas)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
National Park Medical CenterHot springs, ARHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Ouachita Regional Anesthesia Pllc418361921619

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. William Michael Warren allows following entities to bill medicare on his behalf.
Entity NameOuachita Regional Anesthesia Pllc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1982699153
PECOS PAC ID: 4183619216
Enrollment ID: O20040419000399
Entity NameArkansas Anesthesia Network Services, Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1831425982
PECOS PAC ID: 3577603059
Enrollment ID: O20091214000469
Entity NameCentral Arkansas Radiation Therapy Institute Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1508147810
PECOS PAC ID: 7810068400
Enrollment ID: O20111019000931
Entity NameArkansas Surgical Hospital Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1417439944
PECOS PAC ID: 5496793390
Enrollment ID: O20181017000632
Entity NameArkansas Surgical Hospital Llc
Entity TypePart B Supplier - Hospital Department(s)
Entity IdentifiersNPI Number: 1265192835
PECOS PAC ID: 5496793390
Enrollment ID: O20220628002353

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. William Michael Warren is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
William Michael Warren, CRNA
Po Box 22390,
Hot Springs, AR 71903-2390

Ph: (913) 234-1350
William Michael Warren, CRNA
1910 Malvern Ave,
Hot Springs, AR 71901-7752

Ph: (501) 321-1000

Reviews and Comments


Nurse Anesthetist, Certified Registered Nurses in Hot Springs, AR

Mr. Erik W. Adland, CRNA
Nurse Anesthetist - CR
Medicare: Accepting Medicare Assignments
Practice Location: 300 Werner St., Hot Springs, AR 71913
Phone: 501-622-1930    Fax: 501-622-1925
John Miles, CRNA
Nurse Anesthetist - CR
Medicare: Accepting Medicare Assignments
Practice Location: 300 Werner St, Hot Springs, AR 71913
Phone: 501-622-1000    
Ms. Deneice M Brannan, CRNA
Nurse Anesthetist - CR
Medicare: Medicare Enrolled
Practice Location: 1910 Malvern Ave, Hot Springs, AR 71901
Phone: 501-321-1000    
Casey Alan Wright, CRNA
Nurse Anesthetist - CR
Medicare: Accepting Medicare Assignments
Practice Location: 1910 Malvern Ave, Hot Springs, AR 71901
Phone: 501-321-1000    
Mr. Michael P Sawyer, CRNA
Nurse Anesthetist - CR
Medicare: Not Enrolled in Medicare
Practice Location: 1636 Higdon Ferry Rd, Mlk Boulevard, Hot Springs, AR 71913
Phone: 501-520-5215    Fax: 501-520-3704
Mr. James R Humble Jr., CRNA
Nurse Anesthetist - CR
Medicare: Accepting Medicare Assignments
Practice Location: 1910 Malvern Ave, Hot Springs, AR 71901
Phone: 501-321-1000    
James Walter Hendrix, CRNA
Nurse Anesthetist - CR
Medicare: Accepting Medicare Assignments
Practice Location: 300 Werner St, Hot Springs, AR 71913
Phone: 501-664-4532    

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.